Business Listings

We supply officers & agents for loss prevention, surveillance, construction sites, shopping centers, apartment complexes, office complexes, parking areas, concerts, etc. All of our officers and agents have undergone extensive background checks by the state of CA, and have been certified by the state to work as security officers.

For over twenty years NSI-Systems. has offered professional security services for the California Bay Area. We use the leading technology in IP Access Control and IP Video, as well as closed circuit television CCTV, access control, and integrated security systems for comercial, government, and multinational corporations.

Sentry Products has been in the business of delivering Duress Alarm Systems to correctional facilities, juvenile detention centers, judicial centers, emergency Medical facilities and schools for over twenty years. Our original system was developed by a grant from NASA for school security. The Sentry Products SCS is a very reliable emergency communication system that uses ultrasonic technology.

Our staff consists of seasoned security specialists with experience from Sun Microsystems, Hewlett Packard, Stanford University and a number of security startups. Our staff members possess unique knowledge of pc security and cryptography, including cryptographic algorithms, protocols and hardware.

Complete Best Bay Locksmith San Jose is a 24 hour emergency locksmith that provides a wide array of lock and key solutions for your home, auto, or office! We understand that getting locked out can happen to anyone and anytime. If you are looking for a reliable 24 hour locksmith in San Jose, call us for a free estimate at (408) 292-6980.

Our comprehensive Security-By-Design approach allows us to tailor our security services in order to meet our customer's needs, whatever they might be. By taking this approach, we can effectively reduce the total cost of security, and at the same time, minimize overall risk.

As a property owner, securing your assets comes 1st, and we make it our job to assist you do just that. Investing in a quality security system is one of the finest ways to guard your property and your most valuable assets, your family. For over 30 yrs our firm has been helping families all over the Bay Area get security they can rely on.

Quality Security Systems. is a firm that can fulfill the primary need in the Fire / Security industry, quality service with a top level of performance, reliability and dedicated to having the finest products at the lowest prices. Our aim for your home or business is high visibility deterrent creating a safe and secure environment. We are Quality for Security with our Systems!